Simplified Chinese translation for v11

Many thanks to berelinde and jestey for your fantastic works to this mod.

I have made a Chinese translation on v10 last year(didn't find there is already v11 version ). After making a quick check and correction I installed the mod with that translation successfully. Since there is no official Chinese language of BG2EE yet, I cannot do any test on BG2EE, I can only make sure it's OK with vanilla BG2 or BGT with Chinese language games.

I made slightly change to setup-alternatives.tp2 file besides the translation:

-Add a new LANGUAGE line refers to the translation.

-Add a check in the ALWAYS block: if install the mod with language of Chinese, then edit the alternatives_noconvert array. Otherwise there could be messy codes when uninstall/reinstall the mod, when running Windows with Chinese.

-Add a block at the end of .tp2 file, change the SELECT_COMMON1 of "b!mal.cre" and "b!mal2.cre", to show Chinese characters instead of English ones.